<!doctype html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title></title>
    <link rel="stylesheet" href="/jquery-weui-build/dist/lib/weui.min.css">
    <link rel="stylesheet" href="/jquery-weui-build/dist/css/jquery-weui.css">
    <link rel="stylesheet" href="/jquery-weui-build/demos/css/demos.css">
    <link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">

    <script src="https://code.jquery.com/jquery-1.12.4.js"></script>
    <script src="/static/jquery-weui-build/dist/lib/fastclick.js"></script>
    <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>


    <script>
        $(function () {
            FastClick.attach(document.body);
        });
    </script>
    <script src="/jquery-weui-build/dist/js/jquery-weui.js"></script>
</head>
<body>

<div class="ui-widget">


    <div class="weui-search-bar" id="searchBar">
        <form class="weui-search-bar__form" action="#">
            <div class="weui-search-bar__box">
                <i class="weui-icon-search"></i>
                <input type="search" class="weui-search-bar__input" id="tags" placeholder="搜索" required=""
                       onkeyup="catch_keyword(this.value)">
                <a href="javascript:" class="weui-icon-clear" id="searchClear"></a>
            </div>
            <label class="weui-search-bar__label" id="searchText"
                   style="transform-origin: 0px 0px 0px; opacity: 1; transform: scale(1, 1);">
                <i class="weui-icon-search"></i>
                <span>搜索</span>
            </label>
        </form>
        <a href="javascript:" class="weui-search-bar__cancel-btn" id="searchCancel">取消</a>
    </div>
</div>

<script>
    var availableTags = [];//数据源

    //先初始化自动补全功能
    $("#tags").autocomplete({
        source: availableTags //数据源
    });

    //去掉字符串中任意位置的空格
    function Trim(str, is_global) {
        var result;
        result = str.replace(/(^\s+)|(\s+$)/g, "");
        if (is_global.toLowerCase() == "g") {
            result = result.replace(/\s/g, "");
        }
        return result;
    }

    //判断字符串是否全是中文
    function isChn(str) {
        var reg = /^[\u4E00-\u9FA5]+$/;
        if (!reg.test(str)) {
            return false;
        } else {
            return true;
        }
    }

    //捕捉键入的关键字
    function catch_keyword(word = null) {

        if (isChn(Trim(word, 'g'))) {
            get_source(word);
            $("#tags").autocomplete({
                source: availableTags //数据源
            });

        }
    }

    //请求后端获取数据源
    function get_source(word = null) {
        var url = "<?php echo base_url('admin/Demo/source');?>?keyword=" + word;
        $.get({
            type: 'GET',
            url: url,
            async: false,//改为同步
            dataType: 'json',
            success: function (response) {
                console.log('1');
                availableTags = response;
            }
        });
    }

</script>
</body>
</html>
